ASHRAE 90 1 The Big Picture
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Jeff Boldt of KJWW presents ASHRAE 90.1, The Big Picture. Jeff is a member of the 90.1 Mechanical Sub-Committee. Presented at the 2008 ASHRAE Region VI CRC in Chicago, Illinois. May 15, 16, 17
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ASHRAE 90 1 The Big Picture
- 1. ASHRAE/IESNA 90.1 The Big Picture
- 8. History - 2 Issue 1989 1999+ Criteria Professional Judgment LCC Tradeoffs Equal Energy Consumption Equally Cost Effective (LCC)
- 9. ASHRAE Standard 90.1 Relative Stringency 0 0.2 0.4 0.6 0.8 1 1.2 Envelope Mechanical Lighting Building Technology Relative Stringency 1999 1989
- 27. Technical Mandatory Provisions (required for most compliance options) Building System Compliance Options Energy Code Compliance Prescriptive Option Energy Cost Budget Trade Off Option Simplified Envelope HVAC Lighting SWH Power Other
- 30. Climate Mandatory Provisions Prescriptive Option Section 5.1.4 HVAC Lighting SWH HVAC Lighting SWH Envelope Envelope
Notas do Editor
- ANSI: American National Standards Institute ASHRAE: American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. IESNA: Illuminating Engineering Society of North America
- There are only two compliance approaches available for SWH: Prescriptive and ECB. The Simplified Mechanical Approach does not require that the Mandatory Provisions be met.
- CDD50 = for any one day, when the mean temperature is > 50F, there are as many degree-days as degrees F temperature difference between mean temperature and 50F. Annual cooling degree days (CDD) are the sum of the degree-days over a calendar year. HDD65 = for any one day, when the temperature is < 65F, there are as many degree-days as degrees F temperature difference between mean temperature and 65. Annual heating degree-days (HDD) are the sum of the degree-days over a calendar year. Appendix D includes only those locations in ASHRAE Handbook of Fundamentals Standard does not provide guidance on what is “closest”
- Mandatory provisions are always Section X.4. Example: Building Envelope Mandatory Provisions are in Section 5.4 and HVAC Mandatory Provisions are in Section 6.4.